// NewAgentMDNS is used to create a new AgentMDNS
func NewAgentMDNS(agent *Agent, logOutput io.Writer, replay bool,
node, discover string, bind net.IP, port int) (*AgentMDNS, error) {
// Create the service
service := &mdns.MDNSService{
Instance: node,
Service: mdnsName(discover),
Addr: bind,
Port: port,
Info: fmt.Sprintf("Serf '%s' cluster", discover),
}
if err := service.Init(); err != nil {
return nil, err
}
// Create the server
server, err := mdns.NewServer(&mdns.Config{Zone: service})
if err != nil {
return nil, err
}
// Initialize the AgentMDNS
m := &AgentMDNS{
agent: agent,
discover: discover,
logger: log.New(logOutput, "", log.LstdFlags),
seen: make(map[string]struct{}),
server: server,
replay: replay,
}
// Start the background workers
go m.run()
return m, nil
}
func advertiseQOTDService(advertiseTcp bool, advertiseUdp bool, port string) *mdns.Server {
host, _ := os.Hostname()
println(host)
service := &mdns.MDNSService{
Instance: host,
Service: "_qotd._tcp",
Addr: []byte{0, 0, 0, 0},
Port: 3333,
Info: "QOTD Service",
}
service.Init()
server, _ := mdns.NewServer(&mdns.Config{Zone: service})
return server
}
func HostSync(s *SyncManifest, port uint16) {
var service *mdns.MDNSService
var server *mdns.Server
host, err := os.Hostname()
if err != nil {
log.Println("Could not get hostname: ", err)
goto listen
}
service = &mdns.MDNSService{
Instance: host,
Service: "_gosync._tcp",
Port: int(port),
Info: "gosync hosted directory",
}
err = service.Init()
if err != nil {
log.Println("Could not init mdns service: ", err)
goto listen
}
server, err = mdns.NewServer(&mdns.Config{Zone: service})
if err != nil {
log.Println("Could not create mdns service: ", err)
}
defer server.Shutdown()
listen:
listener, err := net.Listen("tcp", ":"+strconv.Itoa(int(port)))
defer listener.Close()
if err != nil {
log.Fatalln("Could not start server: ", err)
}
buf := new(bytes.Buffer)
w, err := gzip.NewWriterLevel(buf, 9)
if err != nil {
log.Fatalln("Could not create compression stream: ", err)
}
fmt.Print("Compressing manifest...")
enc := gob.NewEncoder(w)
enc.Encode(s)
w.Flush()
w.Close()
fmt.Printf("\r%30s", "")
manifestEncoded := buf.Bytes()
buf.Reset()
fmt.Printf("\ngosync online and listening at :%d\n", port)
for {
c, err := listener.Accept()
if err != nil {
log.Fatalln("Failed to accept connection: ", err)
}
go SendSync(s, c, manifestEncoded)
}
}